Stress and strain — practice question

The diagram illustrates the stress-strain graph for bone. What value does the Young modulus of bone have?

• A$1 \times 10^6\,\text{N m}^{-2}$
• B$2 \times 10^6\,\text{N m}^{-2}$
• C$1 \times 10^8\,\text{N m}^{-2}$
• D$2 \times 10^8\,\text{N m}^{-2}$